Examples with MemberBox org.mozilla.javascript.MemberBox used on opensource projects

Example 1 with MemberBox

use of org.mozilla.javascript.MemberBox in project scriptographer by scriptographer.

the class ExtendedJavaClass method construct.

public Scriptable construct(Context cx, Scriptable scope, Object[] args) {
    // If the normal constructor failed, try to see if the last
    // argument is a Callable or a NativeObject object. 
    // If it is a NativeObject, use it as a hashtable containing
    // fields to be added to the object. If it is a Callable,
    // call it on the object and again use its return value
    // as a hashtable if it is a NativeObject.
    Class classObject = getClassObject();
    int modifiers = classObject.getModifiers();
    NativeObject properties = null;
    Callable initialize = null;
    if (args.length > 0 && !Modifier.isInterface(modifiers) && !Modifier.isAbstract(modifiers)) {
        // Look at the last argument to find out if we need to do something
        // special. Possibilities: a object literal that defines fields to
        // be set, or a function that is executed on the object and of which
        // the result can be fields to be set.
        Object last = args[args.length - 1];
        // which might be arguments to methods...
        if (last instanceof Callable && !(last instanceof NativeJavaClass))
            initialize = (Callable) last;
        else if (last instanceof NativeObject) {
            // Now see if the constructor takes a Map as the last argument.
            // If so, the NativeObject will be converted to it thought
            // RhinoWrapFactory. Otherwise, the NativeObject is used
            // as the properties to be set on the instance after creation.
            MemberBox ctor = findConstructor(cx, args);
            if (ctor != null) {
                Class[] types = ctor.ctor().getParameterTypes();
                Class lastType = types[types.length - 1];
                // of which NativeObject's can be converted to.
                if (!ArgumentReader.class.isAssignableFrom(lastType) && !Map.class.isAssignableFrom(lastType)) {
                    properties = (NativeObject) last;
                    if (ScriptableObject.hasProperty(properties, "unwrap"))
                        properties = null;
                }
            } else {
                // There is no constructor that has to be checked, so it
                // can only be a properties list.
                properties = (NativeObject) last;
            }
            if (properties != null) {
                // Support initialize in the passed object literal too.
                Object obj = ScriptableObject.getProperty(properties, "initialize");
                if (obj instanceof Callable)
                    initialize = (Callable) obj;
            }
        }
        // will be found:
        if (initialize != null || properties != null) {
            Object[] newArgs = new Object[args.length - 1];
            for (int i = 0; i < newArgs.length; i++) newArgs[i] = args[i];
            args = newArgs;
        }
    }
    Scriptable obj = super.construct(cx, scope, args);
    // properties returned by initialize.
    if (properties != null)
        setProperties(obj, properties);
    // into the object after, if it is a NativeObject.
    if (initialize != null) {
        Object res = initialize.call(cx, scope, obj, args);
        if (res instanceof NativeObject)
            setProperties(obj, (NativeObject) res);
    }
    return obj;
}